Global Patent Index - EP 0258017 A3

EP 0258017 A3 19891011 - PURIFIED THERMOSTABLE ENZYME AND PROCESS FOR AMPLIFYING, DETECTING, AND/OR CLONING NUCLEIC ACID SEQUENCES USING SAID ENZYME

Title (en)

PURIFIED THERMOSTABLE ENZYME AND PROCESS FOR AMPLIFYING, DETECTING, AND/OR CLONING NUCLEIC ACID SEQUENCES USING SAID ENZYME

Publication

EP 0258017 A3 19891011 (EN)

Application

EP 87307433 A 19870821

Priority

  • US 6350987 A 19870617
  • US 6364787 A 19870617
  • US 89924186 A 19860822
  • US 89951386 A 19860822

Abstract (en)

[origin: EP0258017A2] A purified thermostable enzyme is obtained that has unique characteristics. Preferably the enzyme is isolated from the Thermus aquaticus species and has a molecular weight of about 86,000-90,000 daltons. The thermostable enzyme may be native or recombinant and may be used in a temperature-cycling chain reaction wherein at least one nucleic acid sequence is amplified in quantity from an existing sequence with the aid of selected primers and nucleotide triphosphates. The amplification process comprises treating separate complementary strands of the nucleic acid with a molar excess of two oligonucleotide primers, extending the primers with a thermostable enzyme to form complementary primer extension products which act as templates for synthesizing the desired nucleic acid sequence, and detecting the sequence so amplified. The steps of the reaction can be repeated as often as desired and involve temperature cycling to effect hybridization, promotion of activity of the enzyme, and denaturation of the hybrids formed. The enzyme is preferably stored in a buffer of non-ionic detergents that lends stability to the enzyme.

IPC 1-7

C12N 15/00; C12N 9/12; C12P 19/34; C12N 9/96; C12Q 1/68

IPC 8 full level

C12N 9/12 (2006.01); C12N 9/96 (2006.01); C12N 15/09 (2006.01); C12P 19/34 (2006.01); C12Q 1/68 (2006.01); C12R 1/01 (2006.01); C12R 1/19 (2006.01)

CPC (source: EP KR)

C12N 9/1252 (2013.01 - EP); C12N 9/1276 (2013.01 - EP); C12N 15/00 (2013.01 - KR); C12P 19/34 (2013.01 - EP); C12P 21/00 (2013.01 - KR); C12Q 1/68 (2013.01 - KR); C12Q 1/686 (2013.01 - EP)

C-Set (source: EP)

C12Q 1/686 + C12Q 2527/125

Citation (search report)

  • [Y] EP 0184086 A2 19860611 - UNIV LELAND STANFORD JUNIOR [US]
  • [XP] EP 0229701 A2 19870722 - CETUS CORP [US]
  • [XPD] EP 0200362 B1 19930120
  • [Y] EP 0164054 A1 19851211 - CETUS CORP [US]
  • [A] EP 0156287 A2 19851002 - CETUS CORP [US]
  • [E] EP 0237362 A1 19870916 - CETUS CORP [US]
  • [XD] BIOKHIMIYA, vol. 45, no. 4, April 1980, pages 644-651, Moscow, USSR; A.S. KALEDIN et al.: "Isolation and Properties of dna Polymerase from Extremely Thermophilic Bacterium Termus quaticus YT 1"
  • [XD] JOURNAL OF BACTERIOLOGY, vol. 127, no. 3, September 1976, pages 1550-1557, Baltimore, USA; ALICE CHIEN et al.: "Deoxribonucleic Acid Polymerase from the Extreme Termophile Thermus aquaticus"
  • [AD] SCIENCE, vol. 230, no. 4732, 20 December 1985, pages 1350-1354, Washington DC, US; RANDALL K. SAIKI et al.: " Enzymatic Ampflication of beta-Globin Genomic Sequences and Restriction Site Analysis for Diagnosis of Sickle Cell Anemia"
  • [Y] PATENT ABSTRACTS OF JAPAN, vol. 5, no. 67 (C-53) (739), 7 May 1981; & JP-A-56 018 597 (MITSUBISHI KASEI KOGYO K.K.) 21-02-1981

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0258017 A2 19880302; EP 0258017 A3 19891011; EP 0258017 B1 19970604; EP 0258017 B2 20041201; AT E154072 T1 19970615; AT E391771 T1 20080415; AU 7729887 A 19880519; BR 8704332 A 19880419; CA 1338457 C 19960716; CN 87105787 A 19880511; DE 258017 T1 19920924; DE 3752073 D1 19970710; DE 3752073 T2 19971204; DE 3752073 T3 20060601; DE 3752392 D1 20080521; DE 3752392 T2 20090604; DE 3752392 T3 20131224; DE 776970 T1 19980326; DK 175806 B1 20050307; DK 438487 A 19880223; DK 438487 D0 19870821; EP 0776970 A1 19970604; EP 0776970 B1 20080409; EP 0776970 B2 20130724; ES 2104550 T3 19971016; ES 2104550 T5 20050601; ES 2105998 T1 19971101; GR 3024616 T3 19971231; IE 970680 A1 20000223; IL 83605 A0 19880131; JP 2502041 B2 19960529; JP 2502042 B2 19960529; JP 2719529 B2 19980225; JP H02434 A 19900105; JP H03180178 A 19910806; JP H03180181 A 19910806; JP H0574345 B2 19931018; JP H06292579 A 19941021; JP H06339373 A 19941213; JP H0824570 B2 19960313; KR 880003007 A 19880513; KR 960016559 B1 19961214; NO 305488 B1 19990607; NO 873546 D0 19870821; NO 873546 L 19880223; NZ 221517 A 19910625; SG 46644 A1 19980220

DOCDB simple family (application)

EP 87307433 A 19870821; AT 87307433 T 19870821; AT 96119077 T 19870821; AU 7729887 A 19870821; BR 8704332 A 19870821; CA 542406 A 19870717; CN 87105787 A 19870821; DE 3752073 T 19870821; DE 3752392 T 19870821; DE 87307433 T 19870821; DE 96119077 T 19870821; DK 438487 A 19870821; EP 96119077 A 19870821; ES 87307433 T 19870821; ES 96119077 T 19870821; GR 970402257 T 19970903; IE 970680 A 19870821; IL 8360587 A 19870821; JP 214294 A 19940113; JP 216094 A 19940113; JP 32611390 A 19901129; JP 32611490 A 19901129; JP 388789 A 19890112; KR 870009197 A 19870822; NO 873546 A 19870821; NZ 22151787 A 19870820; SG 1996007005 A 19870821